ML19326B391
| ML19326B391 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 10/26/1974 |
| From: | Phillips J ARKANSAS POWER & LIGHT CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML19326B382 | List: |
| References | |
| NUDOCS 8004150760 | |
| Download: ML19326B391 (1) | |
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3 NORMAN C HOSELEY, DIRECTOR OF UNITED STATES ATOMIC ENERGY COMMIS$!ON 3l DIRECTOR OF REGULATORY OPERATIONS REGION II SUITE 818 230 PEACHTREE ST NORTHWEST qU)q p' D
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A LEAK RATE CALCULATION AT APPROXIMATELY 1400 HOURS ON 10-25=74 INDICATED APPROXIMATELY 4 GALLONS PER MINUYE LEAK IN REACTOR COOLANT SYSTEM WHILE AT 75 PERCENT POWER BEGAN IMMEDIATE PLANT SHUTDOWN 3
AND C00LDOWN. REACHED COLD SHUTDOWN AT APPROXIMATELY 300 HOURS ON 10-26-74 LEAK WAS FOUND IN B LOOP B RE ACTOR COOLANT PUMP' COLD LEG, COUPLING TWO ONE AND ONE HALF INCH WELD ON COLD LEG DRAIN.
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FAILURE WAS IN THE SAME WELD AS IDENTIFIED IN ABNORHAL OCCURRANCE RED 0RT NO. 50-313/74-9 BUT 180 DEGREES FROH PREVIOUS WELD FLAW.
SPOOL PIECE AND COUPLING WILL BE REMOVED FOR EXAMINATION, DETAIL 3'
STRESS ANALYSIS OF THE LINE WILL BE DONE. DUE TO PROMPT IDENTIFICATION l
s 0F A LEAK AND IMMEDIATE SHUTDOWN AND COOLDOWN THIS PRESENTED'NO HAZARD TO THE HEALTH AND SAFETY OF THE PUBLIC 3
J D PHILLIPS VICE PRESIDENT ARKANSAS J0WER AND LIGHT THE ARKANSAS NUCLEAR ONE Oj 16:19 EDT HGMATLT HSB 35
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